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Technical Data Sheet
PartsTable / COMPONENT / T-275-B 1 1/4IN
T-275-B 1 1/4IN ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The T-275-B 1 1/4IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-541-0369, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
T-275-B 1 1/4IN
NSN: 4820-00-541-0369
FSC: 4820
CAGE: 12168 — NIBCO INC (USA)
SPECIFICATIONS
Part NumberT-275-B 1 1/4IN
NSN4820-00-541-0369
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: T-275-B 1 1/4IN · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: A276 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
•
BONNET TYPE: INSIDE SCREW
•
BONNET ATTACHMENT METHOD: UNION
•
RENEWABLE SEAT RING TYPE: THREADED
•
CONNECTION STYLE: PLAIN,OPTIONAL END(PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
MAXIMUM OPERATING TEMP: 425.0 FAHRENHEIT SINGLE RESPONSE DEGF
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONA276 ASSN STD SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE
BONNET TYPEINSIDE SCREW
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY D4 FED SPEC SINGLE MATERIAL RESPONSE BODY
BONNET ATTACHMENT METHODUNION
RENEWABLE SEAT RING TYPETHREADED
CONNECTION STYLEPLAIN,OPTIONAL END(PIPE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MAXIMUM OPERATING TEMP425.0 FAHRENHEIT SINGLE RESPONSE DEGF
MATERIALSTEEL SEAT
TEST DATA DOCUMENT81349-MIL-V-1187 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
352250042587Interchangeable
interchangeable cross-reference
interchangeable
260P1-4INInterchangeable
interchangeable cross-reference
interchangeable
352258902591Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-1187Interchangeable
interchangeable cross-reference
interchangeable
MSS SP-80Interchangeable
interchangeable cross-reference
interchangeable
803Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is T-275-B 1 1/4IN?
T-275-B 1 1/4IN is a T-275-B 1 1/4IN.
What parts can replace T-275-B 1 1/4IN?
There are 17 known substitutes for T-275-B 1 1/4IN: 352250042587, 260P1-4IN, 352258902591 and 14 more. Substitute compatibility should be verified for your specific system.
Is T-275-B 1 1/4IN still available?
T-275-B 1 1/4IN is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026